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Road traffic flow-based method for estimating central city PM2.5 in real time

A technology for PM2.5 and road traffic, which is applied in measuring devices, suspension and porous material analysis, particle suspension analysis, etc. It can solve the problems of high delay in monitoring, long time required for monitoring, and high professional knowledge requirements for researchers.

Active Publication Date: 2013-08-07
CENT SOUTH UNIV
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Problems solved by technology

In the application process of the above model, there is a high degree of dependence on the input data, a long time required for monitoring, a high delay in monitoring, and a high requirement for the professional knowledge of researchers.

Method used

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  • Road traffic flow-based method for estimating central city PM2.5 in real time
  • Road traffic flow-based method for estimating central city PM2.5 in real time
  • Road traffic flow-based method for estimating central city PM2.5 in real time

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Embodiment Construction

[0062] The following is a detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.

[0063] 1. Traffic and road pollution sources are discrete into point pollution sources with fixed intervals.

[0064] Such as figure 2 As shown, the discrete steps of traffic road pollution sources adopted by the present invention include:

[0065] First of all, from the real-time road monitoring system of the transportation department, the real-time traffic flow monitoring data of the traffic roads in the central urban area are obtained. Since the real-time traffic flow monitoring data in the central urban area are generally released according to the road name, it is necessary to monitor the real-time traffic flow according to the road name. The data is matched with the corresponding road attributes to obtain the real-time traffic flow on each road in the central urban area;

[0066] Secondly, discretize the traffic roads in the c...

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Abstract

The invention discloses a road traffic flow-based method for estimating central city PM2.5 in real time. The method comprises the following steps: firstly, dispersing a traffic road pollution source into point pollution sources at fixed intervals by using real-time monitor data of road traffic flow of a central city; then estimating a PM2.5 pollution exposure relative risk value of the central city based on a source characteristic geographically weighted receptor air pollution exposure estimation model provided by the invention; finally, carrying out regression modeling on PM2.5 pollution exposure relative risk values and observed concentration values at a position of a PM2.5 monitoring station in the central city; and estimating a real-time PM2.5 concentration at any space position point in the central city by using the constructed regression model. The method is invented to estimate the real-time PM2.5 concentration at any space position point in the central city accurately and efficiently, under the condition that currently PM2.5 high-density distributed point observation is difficult to implement in the central city.

Description

technical field [0001] The invention relates to the field of environmental monitoring and risk assessment, in particular to a method for real-time estimation of PM in central urban areas based on road traffic flow 2.5 method of concentration. Background technique [0002] PM 2.5 (Aerodynamic equivalent diameter less than or equal to 2.5μm) small particle size, irregular shape, large specific surface area, long suspension time in the atmosphere, long transport distance, can adsorb a large number of toxic compounds, because of small particle size, can stay in In the terminal bronchioles and alveoli, it directly affects the ventilation function of the lungs, making the body prone to hypoxia and long-term exposure to high concentrations of PM 2.5 In the environment, it will seriously endanger human health. China is the global PM 2.5 High-value areas of pollution, urban PM 2.5 The concentration is relatively high, and about 80% of the cities cannot meet the new ambient air q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
Inventor 邹滨郑忠邱永红
Owner CENT SOUTH UNIV
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